In an open lifeboat，the lifeboat compass is usually（）.<br>A:placed in a fixed bracket when being used<br>B:clamped to any position convenient for the coxswain to see it<br>C:permanently mounted on the lifeboat's centerline<br>D:mounted in the center of the boat to eliminate deviation

In an open lifeboat，the lifeboat compass is usually（）.
A:placed in a fixed bracket when being used
B:clamped to any position convenient for the coxswain to see it
C:permanently mounted on the lifeboat's centerline
D:mounted in the center of the boat to eliminate deviation

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